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Fix incorrect mapping of CFI to position for CFI at the start of a tag whose contents are wrapped in an annotation span

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Kovid Goyal 2020-07-16 10:30:45 +05:30
parent 873d6080fd
commit abba1ef004
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1 changed files with 26 additions and 22 deletions
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48
src/pyj/read_book/cfi.pyj
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@ -566,31 +566,35 @@ def point(cfi, doc): # {{{
else:
try_list = [{'start':0, 'end':0, 'a':0.5}, {'start':-1, 'end':0, 'a':0}, {'start':0, 'end':1, 'a':1}]
a = None
rects = None
node_len = node.nodeValue.length if node.nodeValue else 0
offset = r.offset
for v'var i = 0; i < 2; i++':
# Try reducing the offset by 1 if we get no match as if it refers to the position after the
# last character we wont get a match with getClientRects
offset = r.offset - i
if offset < 0:
offset = 0
k = 0
while (not rects or not rects.length) and k < try_list.length:
t = try_list[k]
k += 1
start_offset = offset + t.start
end_offset = offset + t.end
a = t.a
if start_offset < 0 or end_offset >= node_len:
continue
range_.setStart(node, start_offset)
range_.setEnd(node, end_offset)
rects = range_.getClientRects()
if not offset:
range_.setStart(node, 0)
range_.setEnd(node, 0)
else:
rects = v'[]'
for v'var i = 0; i < 2; i++':
# Try reducing the offset by 1 if we get no match as if it refers to the position after the
# last character we wont get a match with getClientRects
offset = r.offset - i
if offset < 0:
offset = 0
k = 0
while not rects?.length and k < try_list.length:
t = try_list[k]
k += 1
start_offset = offset + t.start
end_offset = offset + t.end
a = t.a
if start_offset < 0 or end_offset >= node_len:
continue
range_.setStart(node, start_offset)
range_.setEnd(node, end_offset)
rects = range_.getClientRects()
if not rects or not rects.length:
print(str.format("Could not find caret position: rects: {} offset: {}", rects, r.offset))
return None
if not rects?.length:
print(str.format("Could not find caret position for {} : rects: {} offset: {}", cfi, rects, r.offset))
return None
else:
x, y = r.x, r.y